mainloop.h

采用AD9851设计的一个产生50M 方波

#ifndef _mainloop_h
#define _mainloop_h
unsigned char Key_Process ;
unsigned char Key_Push_Flag ;
unsigned char Key_Code;

unsigned char 	old_key,		// 老化键值
				key_counter;		// 按键年龄计数器（用于键盘消抖）
unsigned char 		new_key;		// 新键值

#define FALSE 0x00
#define TRUE 0xFF
void init_other(void);
void init_port(void);
void init_special_interrupts(void);
//unsigned char c1;
unsigned char cnt;
int DisplayTimer;
unsigned char DEnable;
unsigned char timer;
unsigned char KeyEnable;
 char Freqdisplay[7]={0,0,0,1};
 unsigned char c1;
 unsigned long c;
//unsigned char Voldisplay[7];
unsigned char fd;//进位标志
unsigned char fd1;//借位标志
double f, mul, v,freq;
unsigned char ichar, Renew_Key, En_Key,i,p,p_bit,p_num,p1;
unsigned char Dischar[2];

enum Function {FSK, FM, PSK, ASK, AM, Freq };
enum Function Fnc;

unsigned char K_M;

unsigned char Freq_Vol;
unsigned char Fichar,Vichar;
unsigned long Dis(unsigned char *,unsigned char *,unsigned char ad);
unsigned char UpDown(unsigned char *, double *, unsigned char );
void unit(unsigned char u);
void num_renew(unsigned char * memdis);
void key_scan(void);
#endif